公开(公告)号：US20240018676A1

公开(公告)日：2024-01-18

申请号：US18038914

申请日：2021-12-09

Applicant: POSCO Co., Ltd

Inventor： Jin-Ho Jung ,  Won-Hwi Lee ,  Ki-Cheol Kang ,  Seong-Choon Kwon

IPC: C25D3/20 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/22 ,  C22C38/06 ,  C22C38/00 ,  C22C38/02 ,  C21D9/46 ,  C21D1/74 ,  C25D5/50 ,  C23C2/06 ,  C23C28/02

CPC classification number: C25D3/20 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/22 ,  C22C38/06 ,  C22C38/002 ,  C22C38/02 ,  C21D9/46 ,  C21D1/74 ,  C25D5/50 ,  C23C2/06 ,  C23C28/021

Abstract: The steel sheet for plating according to an aspect of the present invention has a GDS profile of an Mn element, as observed in the depth direction from the surface, sequentially including a maximum point and a minimum point, wherein a difference of converted concentration of Mn may be 80% or more, and a difference of converged concentration of Si may be 50% or more.

公开(公告)号：US20240003032A1

公开(公告)日：2024-01-04

申请号：US18039175

申请日：2021-12-09

Applicant: POSCO Co., Ltd

Inventor： Jin-Ho Jung ,  Won-Hwi Lee ,  Ki-Cheol Kang ,  Seong-Choon Kwon

IPC: C25D3/20 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D6/00 ,  C21D1/74 ,  B32B15/01 ,  C23C2/02 ,  C23F17/00 ,  C25D5/50

CPC classification number: C25D3/20 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/06 ,  C22C38/02 ,  C22C38/002 ,  C21D9/46 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D1/74 ,  B32B15/013 ,  C23C2/026 ,  C23F17/00 ,  C25D5/50

Abstract: In a steel sheet for plating, according to one aspect of the present invention, the CBS profile of an Mn element, which is observed in the direction of surface to depth, sequentially comprises local maximum points and local minimum points, difference of converted concentration of Mn can be 10% or higher, and difference of converted concentration of Si can be 10% or higher.